His first conviction was in November 1983 for criminal damage and his last conviction was in December 2003 for possession of a knife.

Masood has not been convicted for any terrorism offences.

The Islamic State group — also known as Islamic State of Iraq and Syria (ISIS) or the Islamic State of Iraq and the Levant (ISIL) — has reportedly claimed responsibility for the terror attack. The attack, for which seven people have been arrested, has led to the death of at least four people, including a policeman.

A prominent news agency, quoting another agency that is believed to be close to ISIS, confirmed that the attack had been perpetrated by the terrorist group.